647433401 has 2 divisors, whose sum is σ = 647433402. Its totient is φ = 647433400.

The previous prime is 647433377. The next prime is 647433433. The reversal of 647433401 is 104334746.

647433401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (647433433) can be obtained adding 647433401 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 370177600 + 277255801 = 19240^2 + 16651^2 .

It is a cyclic number.

It is not a de Polignac number, because 647433401 - 2¹⁸ = 647171257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (647433461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323716700 + 323716701.

It is an arithmetic number, because the mean of its divisors is an integer number (323716701).

Almost surely, 2^647433401 is an apocalyptic number.

It is an amenable number.

647433401 is a deficient number, since it is larger than the sum of its proper divisors (1).

647433401 is an equidigital number, since it uses as much as digits as its factorization.

647433401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 647433401 is about 25444.7126334726. The cubic root of 647433401 is about 865.0974534638.

The spelling of 647433401 in words is "six hundred forty-seven million, four hundred thirty-three thousand, four hundred one".